I upgraded to Windows 10 around August 15th. At first it seemed to be behaving normally. I have my updates set to allow me to schedule a time to reboot and I got the first notification of an update in the middle of last week. I told it to go ahead and do the update at 1am and the next day I got a notification of the update failing and it asking me for another time to do it. Once again I let it try overnight, with no luck, so this time I went ahead and had it do it right away and it seemed to succeed.
Ever since then though, my system has been rebooting nightly. If I go in to Windows Update advanced settings, it's set to "Notify to schedule restart". If I go to the event log, I can see it restarting about 1am from the events that are there. One day I could see that it had applied a windows defender definition update, but other days I can't tell why its rebooting. I've disabled Windows Update service completely. I've gone through the scheduler and the only thing I can see scheduled for 1am is a "maps update".
Any ideas where to look or what to do? Tempted to go back to Windows 7 if it allows me...